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MANCHESTER, ENGLAND - NOVEMBER 25: Zlatan Ibrahimovic of Manchester United lies injured during the Premier League match between Manchester United and Brighton and Hove Albion at Old Trafford on November 25, 2017 in Manchester, England. (Photo by Matthew Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - NOVEMBER 25:  Zlatan Ibrahimovic of Manchester United lies injured during the Premier League match between Manchester United and Brighton and Hove Albion at Old Trafford on November 25, 2017 in Manchester, England.  (Photo by Matthew Peters/Manchester United via Getty Images)

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MANCHESTER, ENGLAND - NOVEMBER 25: Zlatan Ibrahimovic of Manchester United lies injured during the Premier League match between Manchester United and Brighton and Hove Albion at Old Trafford on November 25, 2017 in Manchester, England. (Photo by Matthew Peters/Manchester United via Getty Images)

MANCHESTER, ENGLAND - NOVEMBER 25:  Zlatan Ibrahimovic of Manchester United lies injured during the Premier League match between Manchester United and Brighton and Hove Albion at Old Trafford on November 25, 2017 in Manchester, England.  (Photo by Matthew Peters/Manchester United via Getty Images)

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MANCHESTER, ENGLAND - DECEMBER 31: Zlatan Ibrahimovic of Manchester United lies injured after having a goal disallowed for high feet during the Premier League match between Manchester United and Middlesbrough at Old Trafford on December 31, 2016 in Manchester, England. (Photo by Tom Purslow/Manchester United via Getty Images)

MANCHESTER, ENGLAND - DECEMBER 31:  Zlatan Ibrahimovic of Manchester United lies injured after having a goal disallowed for high feet during the Premier League match between Manchester United and Middlesbrough at Old Trafford on December 31, 2016 in Manchester, England.  (Photo by Tom Purslow/Manchester United via Getty Images)